Abstract
A heavy crude oil and its upgraded oils, obtained by batch slurry-phase hydrocracking at low-severity conditions with and without analytical-grade and ore catalysts rich in iron and molybdenum, were fractionated by atmospheric distillation and were deasphalted with the aim of identifying the fraction responsible for the upgrade of the flow properties. Light cuts were separated from the distillation bottoms at 260 °C. This latter fraction was further deasphalted with heptane at 25 kg/cm2 and 60 °C for separation of maltenes and heptane insolubles. The heptane insolubles were subsequently fractionated into asphaltenes and toluene insolubles by Soxhlet extraction. Light cuts, bottoms, and maltenes were characterized by density, viscosity, simulated distillation, and elemental analysis. Light cuts were also characterized by PIONA analysis. Elemental analysis, 1H and 13C nuclear magnetic resonance, X-ray diffraction, and molecular-weight distribution by gel permeation chromatography were carried out for asphal...
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
